1 files changed, 77 insertions, 0 deletions
diff --git a/board/cr50/factory_mode.c b/board/cr50/factory_mode.c
new file mode 100644
index 0000000000..c8a5dd2cdd
--- /dev/null
+++ b/board/cr50/factory_mode.c
@@ -0,0 +1,77 @@
+/* Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "board_id.h"
+#include "console.h"
+#include "system.h"
+
+#define CPRINTS(format, args...) cprints(CC_CCD, format, ## args)
+#define CPRINTF(format, args...) cprintf(CC_CCD, format, ## args)
+
+
+static int board_id_is_erased(void)
+{
+	struct board_id id;
+	/*
+	 * If we can't read the board id for some reason, return 0 just to be
+	 * safe
+	 */
+	if (read_board_id(&id) != EC_SUCCESS) {
+		CPRINTS("%s: BID read error", __func__);
+		return 0;
+	}
+
+	/* If all of the fields are all 0xffffffff, the board id is not set */
+	if (~(id.type & id.type_inv & id.flags) == 0) {
+		CPRINTS("BID erased");
+		return 1;
+	}
+	return 0;
+}
+
+static int inactive_image_is_guc_image(void)
+{
+	enum system_image_copy_t inactive_copy;
+	const struct SignedHeader *other;
+
+	if (system_get_image_copy() == SYSTEM_IMAGE_RW_A)
+		inactive_copy = SYSTEM_IMAGE_RW_B;
+	else
+		inactive_copy = SYSTEM_IMAGE_RW_A;
+	other = (struct SignedHeader *) get_program_memory_addr(
+		inactive_copy);
+	/*
+	 * Chips from GUC are manufactured with 0.0.13 or 0.0.22. Compare the
+	 * versions to determine if the inactive image is a GUC image.
+	 */
+	if (other->epoch_ == 0 && other->major_ == 0 &&
+	    ((other->minor_ == 13) || (other->minor_ == 22))) {
+		CPRINTS("GUC in inactive RW");
+		return 1;
+	}
+	/*
+	 * TODO(mruthven): Return true if factory image field of header is
+	 * set
+	 */
+	return 0;
+}
+
+/**
+ * Return non-zero if this is the first boot of a board in the factory.
+ *
+ * This is used to determine whether the default CCD configuration will be RMA
+ * (things are unlocked for factory) or normal (things locked down because not
+ * in factory).
+ *
+ * checks:
+ * - If the system recovered from reboot not deep sleep resume.
+ * - If the board ID exists, this is not the first boot
+ * - If the inactive image is not a GUC image, then we've left the factory
+ */
+int board_is_first_factory_boot(void)
+{
+	return (!(system_get_reset_flags() & RESET_FLAG_HIBERNATE) &&
+		inactive_image_is_guc_image() && board_id_is_erased());
+}